Electric lock.



W. A. SGHUTZMANN.

ELECTRIC LOOK.

APPLIGATION FILED 001%. 2B, 1913.

1,124,666. Patented Jan. 12, 1915.

A will THE NORRIS PETERS C(Z, PHOTO-LITE)W WASHINGTOK, m g

WILLIE A. SCHUTZMANN, OF NEW IBERIA, LOUISIANA.

ELECTRIC LOCK. 7

Specification of Letters Patent Patented 12111.12, 1915.

Application filed October 28, 1913. Serial No. 797,834.

To aZZ whom it may concern:

,Be it known that I, WILLIE A. SonnrzuANN, a citizen ofthe UnitedStates, res ding at New Iberia, in the parish of Iberia, State ofLouisiana, have invented certain new and useful Improvements in ElectricLocks; and I do hereby declare the following to be a full, clear, andexact description of the invention, such as will enable others skilledin the art to which it appertains to make and use the same.

This invention relates to improvements in looks, and particularly toelectric locks.

The principal object of the invention is to provide a lock for thetoilet door of a railway car which can be operated by knobs from withinor without while the train is in motion but which can be renderedinoperative except from within when the train is not moving.

Another object is to provide a lock of this character which can only beunlocked from without by means of a key when the train is not in motion.v

Other objects and advantages will be apparent from the Followingdescription, when taken in connection with the accompanying drawings.

In the drawings: Figure 1 is a diagrammatic view showing the lock andits electrical connections. Fig. 2 is an enlarged elevation of the lock,the cover being removed. Fig. 3 is an end elevation of the lock. Fig. 4is a vertical section on the line 14 of Fig. 2. Fig. 5 is a horizontalsectional view on the line 55 of Fig. 2. Fl 6 is a horizontal section onthe line 66 of Fig. 2.

Referring particularly to the accompanying drawings, 10 represents asuitable metal casing which contains the mechanism of the lock. Disposedlongitudinally in the lower portion of the casing is a latch bolt 11,the beveled nose 12 of which projects through the opening 13 in the endwall of the casing. The other end of the bolt is bifurcated as indicatedat 14 and straddles a knob spindle hub 15 disposed transversely in thecasing. The ends of the portions of the bifurcations have. outturnedlugs 16 which are arranged to be engaged by the radially extendingfingers 17 carried by the hub 15. In the other end of the casing abovethe bolt is a second knob spindle hub 18, and extending vertically fromthis hub is an arm 19 in line to be engaged by the ward of the key 20which is inserted through the key hole slot 21 in the side wall of thecasing. Projecting from the lower portion of the hub 18 is an arm 22,and'formed on the rear side of this arm is a rearwardly extending finger23. In one side of the bolt 11 is formed a recess 21- in which isdisposed the beforementioned arm and finger 23. Suitably mounted in thecasing, and bearing with its opposite ends respectively against the pins26, and the shoulder 27 of the bolt isa leaf spring 28, this springnormally forcing the bolt 11 longitudinally so that its nose 12 projectsthrough the opening 13.

Secured in the casing and depending from the upper wall thereof is anelectromagnet 29, the binding terminals 80 projecting above the top ofthe casing and connected with the ends of the coil of theelectro-magnet. In the magnet is a movable core 31. the lower end ofwhich is arranged to engage in an opening 32 formed in the upper edge ofthe bolt. Carried by the lower end portion oftliecore 31 is a disk 33.this disk normally resting on the free end of the finger 23 when nocurrent is flowing through the magnet. Slidably mounted on the side ofthe bolt and spring held normally in alinement with the nose thereof isa plate 34, the outer end of which is beveled and disposed at the lowerside of the be eled end of the bolt and beyond said bolt. This plateacts to raise the core 31 when the current is off, and when the door isslammed shut.

Leading from the terminals 30 are the electric conductors 35 and 36. thet'ormer of which is connected to one terminal of a lamp 37 and the otherto the terminal 40 of a switch 41. From the other terminal of the lamp aconductor 38 leads to the terminal 39 of the switch. The switch isprovided with the terminals 42 and 44 from which lead the conductors 43and 45, said conductors being connected at their other ends to agenerator 16. This generator is mounted on the axle of the car and isrotated thereby.

This lock is particularly adapted for use A the train is in motion, thedoors are unlocked, and by reason of the fact that the generator ismounted on the axle of the car, current will be generated. This 911.61-gizes the electromagnet 29, and .draws upward the core 31, thusreleasing the lower end or nose from the recess or opening 32 in theupper side of the bolt 11. By rotating the knob shank 15, which isprovided with a knob arranged on the outside of the door, the bolt 11may be withdrawn into the easing of the lock. The knob shank 18 may alsobe rotated to'withdraw the bolt into the casing, this shank beingprovided with a knob arranged on the inside of the door. When the shank18 is rotated, the arm 22 engages with the rear wall of the notch 24:ofthe bolt 11 and pushes the bolt into the casing. During the motion ofthe train, the electromagnet is energized and holds the core 31 inelevated position so that by turning either of the. knobs the door canbe opened from Within or from without. When the magnet becomesdeenergized from the stopping of'the train, the core 31 drops andengages in the notch or recess 32. The knob spindle 15 cannot then berotated, and it is impossible for a person to enter the toilet. Should aperson be in the toilet when the train stops, he can open the door bythe spindle 18. This is accomplished by the lifting of the core 31 bymeans of the finger 23, which is disposed beneath the disk' 33 of thesaid core. There is also a key 20 which the train guard can use to openthe door from the outside, which by the turning thereof, will engage thearm "19 and raise the core of the magnet and withdraw the bolt.

The lamp 37 is used to let the orter of the car know that the lock isren ered inoperative from the outside. It will be noted Copies '0: thispatent may be obtained. for five cents each, by addressing the 'wall 25of the bolt, so that the shank cannot be rotated from the outside of thedoor.

The lock can be operated at all times,

whether the magnet is energized or deener gized, fromthe inside, bymeans of the inner knob.

What is claimed is:

l. A look comprising a casing, a .bolt slidably mounted in the casing, aroll back for moving the bolt under normal conditions of the lock, saidbolt being provided with a recess, an electromagnet having a core forengagement in the recess at times, a source of electricity connectedwith the electromagnet, and a second roll back capable of moving thebolt and lifting the core from the recess.

A look including a sliding bolt, a roll back engaging with the inner endof the bolt, for moving the same, electrically controlled means forengagement with the bolt to render the bolt immovable by the roll back,said bolt having a recess in one side thereof, a second roll back formedwith an arm and two fingers, said arm and one of said fingers engagingin the recess, said finger. being arranged to move the electricallycontrolled means out of engagement.

with the bolt, said arm. being arranged to move the bolt, and said otherfinger being arranged to be engaged and moved by the web of a key. I

In testimony whereof, I aflix my signature, in the resence of twowitnesses.

WILLIE A. SCHUTZMANN. Witnesses:

LOUIS INDESI-I, GEORGE SGHUTZMANN.

Commissioner of Patents.

Washington D. C."

